Vogt HEC-10, Service Manual

Page: 21 / 114

HEC-Series Service Manual
INSTALLING YOUR TUBE-ICE MACHINE
10/21/01
3-4
Wiring And Electrical Connection.
! WARNING !
Only service personnel experienced in refrigeration and qualified
to work with high voltage electrical equipment should be allowed
to install or work on the Tube-Ice
®
machine.
! WARNING !
FIGURE 3-3
Electrical Connections for Machine Power & AC Connections
A fused disconnect must be provided near the Tube-Ice
®
machine. Connect 3 phase power to
terminals L1, L2, L3 for operation of the Tube-Ice
®
machine and its controls. Rotation checking of
compressor is not required for reciprocating compressors. Also, if one leg of the 3 phase power is
higher or lower (“Wild”), then it should be connected to terminal #L2. Connect the “Ground” wire to
the “Ground” terminal provided. See “Initial Start-up and Operation”, Section 5.
Scroll compressor rotation must be checked and confirmed to be correct . Attach pressure gages
to the suction & discharge service valves to make sure there is an immediate decrease in the suction
pressure and increase in discharge pressure upon start up. If not, reverse two (2) compressor wires
(L1, L2, L3) at the control panel terminal block to change direction of rotation, and check suction
and discharge pressure on start up again.
Do not switch leads directly at the compressor. Terminals L4 and L5 are for connection of single
phase 208/230 electrical supply for split voltage applications such as 460 volt, 3 phase for
compressor.
! CAUTION !
Do not attempt to start machine prior to connecting water lines
and making the following NECESSARY provisions.
Refer to FIGURES 3-4 & 3-5 (space diagrams) for correct installation.
! CAUTION !